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小小正钛

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[交流] 镁合金研究发展到什么地步啦,怎么连霍尔派奇公式都能发文章了…… 已有7人参与

http://www.sciencedirect.com/sci ... i/S1359646211005057

Influence of grain size and texture on Hall-Petch relationship for a magnesium alloy
W. Yuana, S.K. Panigrahia, J.-Q. Sua and R.S. Mishra, a,
a Center for Friction Stir Processing, Department of Materials Science & Engineering, Missouri University of Science and Technology, Rolla MO 65409, USA
Received 8 July 2011;  revised 29 August 2011;  accepted 30 August 2011.  Available online 1 September 2011.
Abstract
Friction stir processing was applied to a magnesium alloy to generate various grain sizes with same intense basal texture. Subsequent tensile deformation along two orthogonal directions by easy activation or inhibition of basal slip follows Hall-Petch relationship between yield stress and grain size in both directions. The Hall-Petch parameters are texture dependent. Easy activation of basal slip introduces lower values while inhibition of basal slip leads to higher values. The Hall-Petch parameters are interpreted by texture and microstructural factors.
Keywords: Texture; Hall-Petch relationship; magnesium alloy; friction stir processing

这都可以???
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lehigh_73

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4楼: Originally posted by 毛猴 at 2011-09-05 14:16:41
个人观点啊

基础研究还是有点实际意义的,镁合金的搅拌摩擦焊也算一个热门的研究话题吧,别人在这个领域没有发现的细节,这也算是一种创新吧。

我挺赞成作者的这个观点"The Hall-Petch parameters are textur ...

合金强度本来就与泰勒因子有关,这个才与织构有关,
应该不是与织构导致Hall-petch系数的变化,

之所以有这种变化,应该是误解
9楼2015-08-03 10:05:03
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